TRIAKIDAE (HOUNDSHARKS)

Henderson, Aaron C., Reeve, Alan J., Jabado, Rima W. & Naylor, Gavin J. P., 2016, Taxonomic assessment of sharks, rays and guitarfishes (Chondrichthyes: Elasmobranchii) from south-eastern Arabia, using the NADH dehydrogenase subunit 2 (NADH 2) gene, Zoological Journal of the Linnean Society 176 (2), pp. 399-442 : 438

TRIAKIDAE (HOUNDSHARKS)

Two triakid species were included in the present study, namely Mustelus mosis and Iago omanensis . The M. mosis specimens formed a single cluster with two specimens from India reported by Naylor et al. (2012). Two clusters were evident within the I. omanensis specimens from the present study, one consisting of five specimens and the other containing the remaining 28 specimens ( Fig. 2 ). Despite strong branch support for this division, the two I. omanensis clusters exhibited a between-group mean distance of only 1.38 ± 0.40%. Three geographically separated clusters were noted from 19 specimens by Naylor et al. (2012) designated I. omanensis (Gulf of Oman), I. cf. omanensis 1 ( India) and I. cf. omanensis 2 (Red Sea). The larger cluster of Oman specimens grouped with I. omanensis while the smaller cluster grouped with I. cf. omanensis 1.

Figures

Figure 2. Neighbour-joining tree for an 829-bp fragment of the NADH2 gene from 1487 elasmobranch specimens from south-eastern Arabia. Values in parentheses indicate sample size (n) and within-group mean genetic distance (D). Bootstrap values are based on 1000 replications and only values ≥ 95% are shown.